[GAMEPLAY]+[ITEM] Athene's Unholy Grail Drops 5 AP upon Completion

I don't know if this was intended or overlooked, but when you build Athene's Unholy Grail to completion, you lose 5 AP. Fiendish Codex provides 35 AP, whereas Athene's Unholy Grail only provides 30 AP. It doesn't make much sense to me to lose base stats from an item when you build it into a higher tier.

Should it not instead provide 35 or even 40 AP? I do realize you actually gain AP from its passive properties, but still, it doesn't suit a build path to lose base stats upon completion.

Just wanted to point that out; perhaps if this was overlooked it could be fixed in an upcoming update or patch?